Chair with a curvilinear frame

ABSTRACT

A chair with a curvilinear frame includes two vertically aligned curvilinear tubular side frame members facing each other, a horizontally aligned seat attached to each side frame members by two screws inserted through side member screw hole in each side member and into seat screw holes said seat&#39;s right side and left side, and a generally vertically aligned back attached to each side frame members by two screws inserted through side member screw hole in each side member and into back screw holes said back&#39;s right side and left side.

FEDERALLY SPONSORED RESEARCH

Not Applicable

SEQUENCE LISTING OR PROGRAM

Not Applicable

BACKGROUND Field of Invention

This invention relates generally to a chair construction and more particularly to a chair construction which is relatively simple while providing a chair that is light in weight and which provides firm but comfortable support for the user. Further, this invention relates to a chair construction that contains a tubular frame that is continuously curvilinear thereby providing the user with three-dimensional movement allowing him/her to safely shift seating positions or simply rock the chair forwards and backwards or from side-to-side.

General Description of the Prior Art

Numerous chairs have been proposed in the prior art using metal frames, generally tubular, bent to form back and seat supports and providing some degree of resiliency in flexure for use. While many of these chairs have been simple and easy to manufacture, they also have had a number of disadvantages such as:

(1) They do not provide proper support for the user.

(2) They are often uncomfortable, especially when used for an extended period of time.

(3) They have been bulky to ship, even when disassembled.

(4) They tend to have multiple parts making assembly/reassembly difficult and time consuming.

(5) Production depended upon “bender technology” which involved delivering one labor-intensive bend at a time in heavy steel tubing.

Objects and Advantages

The present invention has been designed to address the foregoing problems found in the prior art. Accordingly, the objects and advantages of the present invention are:

-   -   (1) To provide a chair having only two one-piece tubular frame         elements.     -   (2) To provide a chair having only two one-piece tubular frame         elements that have no linear (straight-line) runs.     -   (3) To provide a chair having only two one-piece tubular frame         elements with curvilinear runs.     -   (4) To provide a chair that can be easily disassembled and         shipped as four separate parts (two side frame members and two         interchangeable seat/back elements.     -   (5) To provide a chair having a seat cushion and a back cushion         that are identical parts and thereby interchangeable, less         expensive to manufacture, and easier to store or ship.     -   (6) To provide a chair with side/back frames that are identical         parts and thereby interchangeable, less expensive to         manufacture, and easier to store or ship.     -   (7) To provide a chair that allows the back to move         independently of the seat without the use of additional springs         or mechanical devices.     -   (8) To provide a chair that allows the user to safely move in         three dimensions while changing position or simply rocking the         chair.     -   (9) To provide a chair that moves in multiple directions to         match the moves of the human body.     -   (10) To provide a chair that allows the back, arms, and seat         move independently of each other.     -   (11) To provide a chair with a flexible frame that allows the         user to relieve built-up tension.

Further objects and advantages of my invention will become apparent from a consideration of the drawings and the ensuing description of the invention.

DRAWINGS Drawing Figures

FIG. 1 is a left-front perspective of the chair with a curvilinear frame.

FIG. 2 is a left-side perspective of the present invention.

FIG. 3 is top plan view of the present invention.

FIG. 4 is a bottom plan of the present invention.

FIG. 5 is a front elevation view of the present invention.

FIG. 6 is a rear elevation view of the present invention.

FIG. 7 is a cross-sectional view of the chair with a curvilinear frame taken along line 1-1 in FIG. 1 ; and

FIG. 8 is a cross-sectional view of the chair with a curvilinear frame taken along line 2-2 in FIG. 1 .

REFERENCE NUMERALS IN DRAWINGS

-   10—Side frame member -   101—Arm section -   102—Back section -   103—Leg section -   104—Base section -   11—Side frame screw hole -   20—Seat -   21—Seat screw hole -   22—Right edge -   23—Right edge -   30—Back -   32—Right edge 32—Left edge -   33—Back screw hole -   40—Screw

DETAILED DESCRIPTION Description—Preferred Embodiment

FIG. 1 shows a perspective view of the preferred embodiment of the present invention. Side frames 10 are attached to back 30 by screws 40 in side frame screw holes 1I and to seat 20 by seat screw holes 21. For clarity side frame screw holes 11 and seat screw holes 21 are omitted from the embodiment of FIG. 21 . Side frames 10 each include an arm section 101, back section 102, leg section 103, and base section 104, all of which are curved. FIG. 2 is a left-side perspective of the present invention. FIG. 3 is top plan view of the present invention. FIG. 4 is a bottom plan of the present invention. FIG. 5 is a front elevation view of the present invention. FIG. 6 is a rear elevation view of the present invention. FIG. 7 is a cross-sectional view of the chair with a curvilinear frame taken along line 1-1 in FIG. 1 . FIG. 8 is a cross-sectional view of the chair with a curvilinear frame taken along line 2-2 in FIG. 1 .

Key Points:

(1) Preferred material is high strength aluminum freedom tubing formed by a single-stroke tube-bending technology. Other construction materials possible. (2) Lightweight, flexible, strong, seating parts. Interchangeable with back. (3) Seating and back material: bespoke weave, produced with 3D CNC knitting technology—breathable. Long-lasting seating support. (4) Two component parts. Extreme simplicity. Easy to store, ship. Interchangeability means fewer supply-chain problems. (5) Side-frame members similarly configured. (6) Seat and back members identically configured and interchangeable. (7) Unique configuration of side frame members allows for upward or downward movement of the seat while maintaining the same arm/seat relationship regardless of back or seat movement. (8) Single-stroke forming process allows for a transition from small to large radius bends without the need for any straight section or runs. (9) Curvilinear sections—continuously curving—no straight sections—no angular bends. (10) Delivers comfort and adapts to the user's movements as the seat and back flex. (11) The use of aluminum side support frames (e.g., side frames 10) provides aesthetic beauty in a lightweight minimalist design.

Operation—Preferred Embodiment

A user may sit on seat 20 and enjoy freedom of movement in all direction as side frames 10 move with the user.

Conclusion, Ramifications, and Scope

The present invention as described herein has been designed to address the problems found in the prior art. Accordingly, the objects and advantages of the present invention are:

-   -   (1) To provide a chair having only two one-piece tubular frame         elements. To provide a chair having only two one-piece tubular         frame elements that have no linear (straight-line) runs.     -   (2) To provide a chair having only two one-piece tubular frame         elements with curvilinear runs.     -   (3) To provide a chair that can be easily disassembled and         shipped as four separate parts (two side frame members and two         interchangeable seat/back elements.     -   (4) To provide a chair having a seat cushion and a back cushion         that are identical parts and thereby interchangeable, less         expensive to manufacture, and easier to store or ship.     -   (5) To provide a chair with side/back frames that are identical         parts and thereby interchangeable, less expensive to         manufacture, and easier to store or ship.     -   (6) To provide a chair that allows the back to move         independently of the seat without the use of additional springs         or mechanical devices.     -   (7) To provide a chair that allows the user to safely move in         three dimensions while changing position or simply rocking the         chair. This includes leaning backwards or forward, rocking         backwards or forward, twisting from side-to-side, and flexing         the seat upwards or downward. 

I claim:
 1. A chair with a curvilinear frame comprising: a. two vertically aligned curvilinear tubular side frame members, b. a horizontally aligned seat attached to each side frame members by two screws inserted through side member screw holes in each side member and into seat screw holes said seat's right side and left side, and c. a generally vertically aligned back attached to each side frame members by two screws inserted through side member screw hole in each side member and into back screw holes said back's right side and left side.
 2. The chair according to claim 1 where said side frame members are comprised of high strength aluminum tubing.
 3. The chair according to claim 1 wherein the two curvilinear tubular side frame members are facing each other. 